Murdoch University Research Repository

Welcome to the Murdoch University Research Repository

The Murdoch University Research Repository is an open access digital collection of research
created by Murdoch University staff, researchers and postgraduate students.

Learn more

Removal of endosulfan from water using palm shell activated carbon and rice husk ash

Lim, Y.N., Shaaban, M.G. and Yin, C-Y (2008) Removal of endosulfan from water using palm shell activated carbon and rice husk ash. Journal of Oil Palm Research, 20 . pp. 527-532.

[img]
Preview
PDF - Published Version
Download (173kB)
Free to read: http://palmoilis.mpob.gov.my/publications/joprv20d...
*No subscription required

Abstract

In this study, the adsorption of endosulfan, a type of pesticide, onto agricultural waste-based adsorbents, namely oil paint shell activated carbon (PSAC) and rice husk ash, (RHA), was investigated. The as-received adsorbents were used for batch α- and, β-endosulfan adsorption studies which included kinetics and equilibrium aspects at a constant solution pH of 5 and at a temperature of 25°C. It was found that removal of, β- endosulfan by both adsorbents was significantly more efficient than that of α-endosulfan indicating a high affinity of PSAC and RHA towards, β-endosulfan. Interestingly, kinetic equilibrium for β-endosulfan adsorption onto PSAC was achieved after 30 min of contact time with a very high capacity of 418 mg g-1. The adsorption kinetics data fitted the pseudo-second order model well, implying chemisorption was the rate-controlling step. Equilibrium adsorption data for PSAC fit the Freundlich isotherm better than the Langinuir isotherm, suggesting the existence of multi-layer adsorption of endosulfan on a relitively heterogeneous PSAC surface. It was found that PSAC was efficient in removing β-endosulfan from water while it was conversely true for RHA.

Item Type: Others
Publisher: Malaysian Palm Oil Board
URI: http://researchrepository.murdoch.edu.au/id/eprint/10390
Item Control Page Item Control Page

Downloads

Downloads per month over past year